So I have been having a lot of problems with my titanium dual LNB. i have two STB hook to it and when one STB is turn on it works fine but when both are on the signal drops and dont get anything at the STB. i have try both ports and does it on both. i did notice that LNB port 2 doesnt always work but port 1 does work only when one STB is hook to it. Do i need new LNB?